Ambipolar Filamentation of Turbulent Magnetic Fields : A numerical simulation

Details Ambipolar Filamentation of Turbulent Magnetic Fields : A numerical simulation Ambipolar Filamentation of Turbulent Magnetic Fields : A numerical simulation

2000-05-18

arxiv.org/abs/astro-ph/0005374v1

Astronomy and Astrophysics

Astrophysics

8 pages, 6 figures, accepted for publication in A&A

Scientific paper

We present the results of a 2-D, two fluid (ions and neutrals) simulation of the ambipolar filamentation process, in which a magnetized, weakly ionized plasma is stirred by turbulence in the ambipolar frequency range. The higher turbulent velocity of the neutrals in the most ionized regions gives rise to a non-linear force driving them out of these regions, so that the initial ionization inhomogeneities are strongly amplified. This effect, the ambipolar filamentation, causes the ions and the magnetic flux to condense and separate from the neutrals, resulting in a filamentary structure.

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